PPT-Chi-Squared Test

Looks at differences in frequencies between groups eg Is there a significant difference between the frequency populations of three different bird species at two different locations Null Hypothesis. center(# c)reportsresultsforthefractionalpolynomialin(scaled)term,centeredonc.Thedefaultistoperformnocentering.term(p1;p2;:::;pm)-c(p1;p2;:::;pm)isreported.Thismakestheconstantcoefcient(intercept)eas X. 2. Goodness of Fit. X. 2. . Test for Homogeneity. X. 2. . Test for Independence. A brokerage firm wants to see whether the type of account a customer has (Silver, Gold, Platinum) affects the type of trades that a customer makes (in person, by phone, or on the Internet). It collects a random sample of trades made for its customers over the past year and performs a test. . .estimatesreplayreg Modelreg Source SSdfMSNumberofobs=74 F(4,69)=61.62Model .0093424364.002335609ProbF=0.0000Residual .00261519269.000037901R-squared=0.7813 AdjR-squared=0.7686Total .01195762873.0001 .encodesex,gen(gender).regresshbpgenderSource SSdfMSNumberofobs=1128 F(1,1126)=14.04Model .6444856821.644485682ProbF=0.0002Residual 51.67377671126.045891454R-squared=0.0123 AdjR-squared=0.0114Total 5 Cohen’s . d. and Omega Squared. Jason R. Finley. Mon April 1. st. , 02013. http://. www.jasonfinley.com. /tools. ω. 2. DEAL WITH IT. Effect Sizes to use. Comparison of means . (. t. test):. Cohen’s . for Social. and . Behavioral. . Sciences. Part IV: Causality. Multivariate. . Regression. R . squared. , F test, . Chapter. . 11. Prof. Amine Ouazad. Data: Variables. y. . Box . = First run U.S. box office ($. Frequentist. Statistics. Ryan Baker. Note. Images in this talk are drawn from the web fairly heavily, under fair use. Note. There are . many. topics I’m not covering here. I am not using all the terminology that a stats course would use. The Chi-Squared Test (. . 2. ). The chi-squared test is used to study differences between data sets.. It is only used for frequencies (counts), . never. for measurements.. It is used to compare an experimental result with an expected theoretical outcome.. Square sample areas marked out with a frame.. Repeatedly place a quadrat at random positions in a habitat. Record number of organisms present each time. Quadrats. Random numbers generated to create coordinates where the quadrat is placed in an area (reduces bias). STAT120C. 1. Review of Tests Learned in STAT120C. Which test(s) should be used to answer the following questions?. Is husband’s BMI larger than wife’s?. Is men’s BMI different from women’s?. Do gender and smoking affect human’s weight?. 4.1 & 4.2. Field work – associations between species (p207). Testing for association between two species using the chi-squared test with data obtained by quadrat sampling. Quadrats sampling. Quadrats are square sample areas, often marked by a quadrat frame. . Frequentist. Statistics. Ryan Baker. Note. Images in this talk are drawn from the web fairly heavily, under fair use. Note. There are . many. topics I’m not covering here. I am not using all the terminology that a stats course would use. X. 2. . Test for Homogeneity. X. 2. . Test for Independence. A brokerage firm wants to see whether the type of account a customer has (Silver, Gold, Platinum) affects the type of trades that a customer makes (in person, by phone, or on the Internet). It collects a random sample of trades made for its customers over the past year and performs a test. . 佛（三稱）. 無上甚深微妙法. 百千萬劫難遭遇. 我今見聞得受持. 願解如來真實義. “. 形而上學. ”. . “如何將心量打開”. 第一部. : . “無限”之外 .